The diagram below shows a monohybrid cross. What are the genotypes for height in plants $P, Q$,and $R$?

The ratio of offspring produced by a cross between an $F_1$ heterozygote and a recessive parent is ....

When two different alleles of a gene are present in an individual,this condition is known as:

In pea plants,yellow seeds are dominant over green seeds. If a heterozygous yellow-seeded plant is crossed with a green-seeded plant,what will be the expected ratio of yellow to green-seeded plants in the $F_1$ generation?

$BB =$ alleles for black coat colour
$bb =$ alleles for brown coat colour
If the offspring of a cross between a black mouse $(BB)$ and a brown mouse $(bb)$ are allowed to interbreed,find the percentage of black-coated mice in the $F_2$ generation.

In Mendel's monohybrid cross experiment,the phenotypic ratio is $P$ and the genotypic ratio is $Q$. Select the correct option for $P$ and $Q$.
$\quad \quad \quad P \quad \quad \quad Q$